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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:54 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:58 +0200 |
| commit | cbfe20f565228966f0249f016752437df95df679 (patch) | |
| tree | 240bf1cf3759fc5162ed2894e127ab3b30740bad /init | |
| parent | 03450e271a160bc07a2c48e5769e0ba338582d77 (diff) | |
| download | linux-cbfe20f565228966f0249f016752437df95df679.tar.gz linux-cbfe20f565228966f0249f016752437df95df679.tar.bz2 linux-cbfe20f565228966f0249f016752437df95df679.zip | |
fs: add do_faccessat() helper and ksys_access() wrapper; remove in-kernel calls to syscall
Using the fs-internal do_faccessat() helper allows us to get rid of
fs-internal calls to the sys_faccessat() syscall.
Introducing the ksys_access() wrapper allows us to avoid the in-kernel
calls to the sys_access() syscall. The ksys_ prefix denotes that this
function is meant as a drop-in replacement for the syscall. In
particular, it uses the same calling convention as sys_access().
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index b8649d1466e1..d0ded4322c6b 100644 --- a/init/main.c +++ b/init/main.c @@ -1087,7 +1087,8 @@ static noinline void __init kernel_init_freeable(void) if (!ramdisk_execute_command) ramdisk_execute_command = "/init"; - if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) { + if (ksys_access((const char __user *) + ramdisk_execute_command, 0) != 0) { ramdisk_execute_command = NULL; prepare_namespace(); } |